Varying the scope of attention alters the encoding of categorical and coordinate spatial relations
Varying the scope of attention alters the encoding of categorical and coordinate spatial relations
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DOI：
10.1016/j.neuropsychologia.2010.04.027
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发表时间：
2010-07-01
期刊：
影响因子：
2.6
通讯作者：
Kosslyn, Stephen M.
中科院分区：
文献类型：
--
作者：
Borst, Gregoire;Kosslyn, Stephen M.
两种类型的表示可用于指定空间关系：坐标空间关系表示指定两个对象之间的精确距离，而分类空间关系表示指定类别（如上方或下方）以指定两个对象之间的空间关系。计算机模拟模型表明，坐标空间关系表示应该更容易编码，如果一个人出席一个相对较大的空间区域，而分类空间关系应该更容易编码，如果一个人出席一个相对较小的空间区域。我们测试了这些预测。为了改变注意力的范围，我们要求参与者专注于Navon字母的局部或全局水平，然后立即让他们决定一个点是在2.54厘米的范围内（坐标判断）还是高于或低于酒吧（分类判断）。参与者在关注Navon字母的全局水平后，在坐标任务中的速度更快，而在关注局部水平后，他们在分类任务中的速度更快。虽然我们没有测试这些效应的半球侧化，但这些发现对大脑半球为什么在编码两种空间关系的相对容易性方面存在差异的理论有直接的影响。(C)2010爱思唯尔有限公司版权所有。
Two types of representations can be used to specify spatial relations: Coordinate spatial relations representations specify the precise distance between two objects, whereas categorical spatial relations representations assign a category (such as above or below) to specify a spatial relation between two objects. Computer simulation models suggest that coordinate spatial relations representations should be easier to encode if one attends to a relatively large region of space, whereas categorical spatial relations should be easier to encode if one attends to a relatively small region of space. We tested these predictions. To vary the scope of attention, we asked participants to focus on the local or global level of Navon letters, and immediately afterwards had them decide whether a dot was within 2.54 cm of a bar (coordinate judgment) or was above or below the bar (categorical judgment). Participants were faster in the coordinate task after they had just focused on the global level of a Navon letter whereas they were faster in the categorical task after they had just focused on the local level. Although we did not test the hemispheric lateralization of these effects, these findings have direct implications for theories of why the cerebral hemispheres differ in their relative ease of encoding the two kinds of spatial relations. (C) 2010 Elsevier Ltd. All rights reserved.